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Climate Catastrophe
Based on accelerating global trends, the most likely world-ending scenario is a climate catastrophe driven by unchecked environmental degradation. Rising temperatures, extreme weather events, and biodiversity loss are already disrupting food systems, water supplies, and habitable zones, with projections indicating tipping points like melting ice caps and permafrost thaw releasing massive greenhouse gases.
Geopolitically, resource scarcity could escalate conflicts over water and arable land, while societal strains from mass migrations and economic collapses amplify instability. Technological advances in renewables offer mitigation, but insufficient global cooperation and fossil fuel dependency make runaway warming probable, potentially rendering large parts of Earth uninhabitable and leading to civilizational collapse by mid-century.
Geopolitically, resource scarcity could escalate conflicts over water and arable land, while societal strains from mass migrations and economic collapses amplify instability. Technological advances in renewables offer mitigation, but insufficient global cooperation and fossil fuel dependency make runaway warming probable, potentially rendering large parts of Earth uninhabitable and leading to civilizational collapse by mid-century.